This volume assembles nine of the author’s essays on determinism, freedom, and moral responsibility in Western antiquity, ranging from Aristotle via the Epicureans and Stoics to the third century. It is representative of the author’s overall scholarship on the topic, much of which emphasizes that what commonly counts as ‘the problem of free will and determinism’ is noticeably distinct from the issues the ancients discussed. It is true that one main component of the ancient discourse concerned the question how moral accountability can be consistently combined with certain causal factors that impact human behaviour. However, it is not true that the ancient problems involved the questions of the compatibility of causal determinism with our ability to do otherwise or with free will. Instead, we encounter questions about human rational and autonomous agency and their compatibility with preceding causes, external or internal; with external impediments; with divine predetermination and theological questions; with physical theories like atomism and continuum theory, and with sciences more generally; with elements that determine character development from childhood, such as nature and nurture; with epistemic features such as ignorance of circumstances; with necessity and modal theories generally; with folk theories of fatalism; and also with questions of how human autonomous agency is related to moral development, to virtue and wisdom, to blame and praise. In Classical and Hellenistic philosophy, these questions were all debated without reference to freedom to do otherwise or free will—. This volume considers all of these questions to some extent.